Have you, or have you known anyone, to keep their high-mileage vehicle, but put a new or rebuilt engine into it? We've had our 2005 Dodge Durango SLT since December 2005, when we bought it used. It was originally sold in March 2005 as new. It now has almost 172,000 miles on the engine. Have replaced a number of things on the engine, including valve covers and fuel injectors. We know that someday, IOW, sooner or later, the engine will either quit or be too expensive to have repaired. So, what comes into view is, getting/buying either a new, or rebuilt engine, to put in it. We have looked at older Durango's, but their mileage was just that, "old/high". We can't afford a new Durango, that is definitely for sure. Thoughts, please.